Radiant|Lab Grown|IGI

1.56ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG700511943

Certificate IGI LG700511943

Diamond specifications and retailer prices

From $351 USD
Save $2,269 USD (87%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $4,650 USD at Brilliant Earth
View at Brilliant Earth

About this 1.56ct lab-grown radiant diamond

This 1.56ct 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 LG700511943 or 700511943. Listed at 27 retailers, with a 646% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700511943
Dimensions5.72 × 5.72 × 8.42 mm
L/W Ratio1.00
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
5.72 mm5.72 mm1.56 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700511943
Side View
Table 61.0%Crown 42.5°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $4,650 USD|Low: $279 USD|High: $4,660 USD|Avg: $1,298 USD|-0.2%
Brilliant Earth
Retailer 2
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Retailer 22
October 1, 2026
Retailer 13$423 USD
Retailer 17$499 USD
Retailer 16$502 USD
Retailer 18$555 USD
Retailer 5$691 USD
Retailer 8$692 USD
Retailer 4$733 USD
Retailer 19$773 USD
Retailer 11$995 USD
Retailer 3$1,010 USD
Retailer 9$1,087 USD
Retailer 20$1,170 USD
Retailer 15$1,441 USD
Retailer 7$1,459 USD
Retailer 14$1,570 USD
Retailer 2$1,644 USD
Retailer 12$1,676 USD
Retailer 21$1,695 USD
Retailer 6$1,720 USD
Retailer 10$1,921 USD
Retailer 22$2,620 USD
Brilliant Earth$4,650 USD

40 data points across 22 retailers

27 retailers$351 USD to $2,620 USD

A
Cheapest Retailer
-
$351 USD
A
Retailer 2
-
$407 USD
View
A
Retailer 3
-
$423 USD
View
A
Retailer 4
-
$430 USD
View
A
Retailer 5
-
$499 USD
HK$3,900 HKD
View
A
Retailer 6
-
$502 USD
View
A
Retailer 7
-
$555 USD
View
A
Retailer 8
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$691 USD
€658 EUR
View
A
Retailer 9
-
$692 USD
View
A
Retailer 10
-
$733 USD
ZAR 11,834 ZAR
View
A
Retailer 11
-
$759 USD
£597 GBP
View
Price last confirmed 21 days ago
A
Retailer 12
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$775 USD
£610 GBP
View
A
Retailer 13
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$995 USD
View
A
Retailer 14
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$1,010 USD
A$1,554 AUD
View
A
Retailer 15
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$1,087 USD
View
B+
Retailer 16
-
$1,170 USD
View
B+
Retailer 17
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$1,399 USD
View
B+
Retailer 18
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$1,441 USD
View
B+
Retailer 19
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$1,459 USD
SGD 1,972 SGD
View
B+
Retailer 20
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$1,570 USD
£1,236 GBP
View
Price last confirmed 22 days ago
B+
Retailer 21
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$1,644 USD
View
B+
Retailer 22
-
$1,676 USD
View
B+
Retailer 23
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$1,695 USD
A$2,607 AUD
View
B+
Retailer 24
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$1,720 USD
£1,354 GBP
View
B+
Retailer 25
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$1,960 USD
View
B
Retailer 26
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$2,620 USD
View
Most Expensive
B
Brilliant Earth
14847767A · Sep 17
$4,650 USD
View
Price last confirmed 14 days ago
26 more retailers have this diamond
Prices start from $351 USDSave up to $2,269 USD

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.

A
1.56ct Radiant
$351 USD