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Radiant|Lab Grown|IGI

1.64ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG700511937

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG700511937

Diamond specifications and retailer prices

From $442 SGD
$346 USD
As of October 30, 2026
Save $4,416 SGD (91%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $4,858 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.64ct lab-grown radiant diamond

This 1.64ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG700511937 or 700511937. Listed at 30 retailers as of October 30, 2026, with prices from $442 to $4,858, a $4,416 spread on the same certified stone. Brilliant Earth lists it at $4,858. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700511937
Dimensions8.70 × 5.82 × 3.78 mm
L/W Ratio1.49
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.70 mm5.82 mm1.64 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700511937
Side View
Table 60.0%Crown 41°Girdle: MediumPavilion 31.2°Culet: NoneDepth 64.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,858 SGD|Low: $442 SGD|High: $6,251 SGD|Avg: $1,704 SGD|-22.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 31, 2026
Retailer 3$442 SGD
Retailer 13$493 SGD
Retailer 9$638 SGD
Retailer 19$741 SGD
Retailer 22$770 SGD
Retailer 7$881 SGD
Retailer 2$885 SGD
Retailer 18$942 SGD
Retailer 16$984 SGD
Retailer 8$1,245 SGD
Retailer 17$1,271 SGD
Retailer 4$1,514 SGD
Retailer 21$1,607 SGD
Retailer 11$1,815 SGD
Retailer 12$1,829 SGD
Retailer 6$2,070 SGD
Retailer 5$2,120 SGD
Retailer 20$2,145 SGD
Retailer 10$2,276 SGD
Retailer 14$2,452 SGD
Retailer 15$3,784 SGD
Brilliant Earth$4,858 SGD

34 data points across 22 retailers

30 retailers$442 SGD to $4,858 SGD

A
Cheapest Retailer
-
$442 SGD
$346 USD
Retailer 2
-
$442 SGD
$346 USD
View
Price last confirmed 23 days ago
Retailer 3
-
$470 SGD
$368 USD
View
Price last confirmed 31 days ago
A
Retailer 4
-
$493 SGD
$386 USD
View
Final sale: no returns
Retailer 5
-
$545 SGD
$426 USD
View
Price last confirmed 34 days ago
Retailer 6
-
$548 SGD
$429 USD
View
Price last confirmed 28 days ago
Retailer 7
-
$575 SGD
$450 USD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$638 SGD
HK$3,900 HKD
View
A
Retailer 9
-
$741 SGD
$580 USD
View
A
Retailer 10
-
$770 SGD
$602 USD
View
A
Retailer 11
-
$881 SGD
$689 USD
View
A
Retailer 12
-
$885 SGD
€659 EUR
View
A
Retailer 13
-
$942 SGD
ZAR 11,898 ZAR
View
A
Retailer 14
-
$984 SGD
£606 GBP
View
A
Retailer 15
-
$1,245 SGD
$974 USD
View
A
Retailer 16
-
$1,271 SGD
A$1,530 AUD
View
B+
Retailer 17
-
$1,514 SGD
$1,184 USD
View
B+
Retailer 18
-
$1,607 SGD
$1,257 USD
View
B+
Retailer 19
-
$1,762 SGD
$1,378 USD
View
Retailer 20
-
$1,762 SGD
$1,378 USD
View
Price last confirmed 21 days ago
B+
Retailer 21
-
$1,815 SGD
$1,420 USD
View
B+
Retailer 22
-
$1,829 SGD
View
Retailer 23
-
$1,873 SGD
$1,465 USD
View
Price last confirmed 31 days ago
B+
Retailer 24
-
$2,070 SGD
$1,619 USD
View
B+
Retailer 25
-
$2,120 SGD
$1,658 USD
View
B+
Retailer 26
-
$2,145 SGD
£1,321 GBP
View
Retailer 27
-
$2,276 SGD
A$2,739 AUD
View
Price last confirmed 29 days ago
B
Retailer 28
-
$2,452 SGD
$1,918 USD
View
Retailer 29
-
$3,784 SGD
$2,960 USD
View
Price last confirmed 33 days ago
Most Expensive
B
Brilliant Earth
14847337A · Oct 30
$4,858 SGD
$3,800 USD
View
29 more retailers have this diamond
Prices start from $442 SGDSave up to $4,416 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.64ct Radiant
$442 SGD