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Round|Lab Grown|IGI

1.29ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG818644617

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644617

Diamond specifications and retailer prices

From $289 USD
As of October 29, 2026
Save $2,061 USD (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,350 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818644617 or 818644617. Listed at 24 retailers as of October 27, 2026, with prices from $289 to $2,350, a $2,061 spread on the same certified stone. Queensmith lists it at $2,350. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644617
Dimensions6.99 × 7.04 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.99 mm7.04 mm1.29 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644617
Side View
Table 59.0%Crown 33.3°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
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 29
Current: $576 USD|Low: $277 USD|High: $1,830 USD|Avg: $772 USD|+1.5%
Retailer 1
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
October 31, 2026
Retailer 3$289 USD
Retailer 4$323 USD
Retailer 6$358 USD
Retailer 5$482 USD
Retailer 12$515 USD
Retailer 9$570 USD
Retailer 1$576 USD
Retailer 11$616 USD
Retailer 7$632 USD
Retailer 10$874 USD
Retailer 2$922 USD
Retailer 14$1,360 USD
Retailer 13$1,438 USD
Retailer 8$1,600 USD

34 data points across 14 retailers

24 retailers$289 USD to $2,350 USD

A
Cheapest Retailer
-
$289 USD
A
Retailer 2
-
$323 USD
View
Final sale: no returns
A
Retailer 3
-
$335 USD
View
A
Retailer 4
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$358 USD
View
A
Retailer 5
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$358 USD
View
A
Retailer 6
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$397 USD
HK$3,100 HKD
View
A
Retailer 7
-
$482 USD
View
A
Retailer 8
-
$515 USD
View
A
Retailer 9
-
$570 USD
£449 GBP
View
A
Retailer 10
-
$576 USD
€549 EUR
View
A
Retailer 11
-
$616 USD
ZAR 9,946 ZAR
View
A
Retailer 12
-
$632 USD
£498 GBP
View
A
Retailer 13
-
$807 USD
View
B+
Retailer 14
-
$874 USD
A$1,345 AUD
View
B+
Retailer 15
-
$922 USD
View
B+
Retailer 16
-
$1,151 USD
SGD 1,556 SGD
View
B+
Retailer 17
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$1,152 USD
View
B+
Retailer 18
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$1,201 USD
View
B+
Retailer 19
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$1,276 USD
View
Retailer 20
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$1,360 USD
View
Price last confirmed 13 days ago
B+
Retailer 21
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$1,438 USD
£1,132 GBP
View
B
Retailer 22
-
$1,477 USD
View
B+
Retailer 23
-
$1,600 USD
View
Most Expensive
B
Queensmith
LG818644617 · Oct 27
$2,350 USD
£1,850 GBP
View
23 more retailers have this diamond
Prices start from $289 USDSave up to $2,061 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.29ct Round
$289 USD