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Round|Lab Grown|IGI

1.28ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG811636178

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811636178

Diamond specifications and retailer prices

From $248 USD
As of November 3, 2026
Save $1,987 USD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,235 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG811636178 or 811636178. Listed at 22 retailers as of October 27, 2026, with prices from $248 to $2,235, a $1,987 spread on the same certified stone. Queensmith lists it at $2,235. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811636178
Dimensions6.96 × 6.99 × 4.27 mm
L/W Ratio1.00
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
6.96 mm6.99 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811636178
Side View
Table 60.0%Crown 34°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.2%

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: Nov 3
Current: $509 USD|Low: $334 USD|High: $1,113 USD|Avg: $629 USD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 3, 2026
Retailer 9$370 USD
Retailer 5$435 USD
Retailer 6$474 USD
Retailer 4$500 USD
Retailer 1$509 USD
Retailer 2$671 USD
Retailer 3$728 USD
Retailer 8$1,050 USD
Retailer 7$1,100 USD

39 data points across 9 retailers

22 retailers$248 USD to $2,235 USD

Retailer 1
-
$212 USD
Price last confirmed 32 days ago
A
Retailer 2
-
$248 USD
View
Final sale: no returns
Retailer 3
-
$257 USD
View
Price last confirmed 28 days ago
Retailer 4
-
$274 USD
View
Price last confirmed 32 days ago
A
Retailer 5
-
$307 USD
HK$2,400 HKD
View
B+
Retailer 6
-
$370 USD
View
A
Retailer 7
-
$435 USD
£343 GBP
View
A
Retailer 8
-
$474 USD
ZAR 7,652 ZAR
View
A
Retailer 9
-
$500 USD
€476 EUR
View
A
Retailer 10
-
$509 USD
£401 GBP
View
B+
Retailer 11
-
$526 USD
View
B+
Retailer 12
-
$671 USD
A$1,032 AUD
View
B+
Retailer 13
-
$728 USD
View
Retailer 14
-
$863 USD
View
Price last confirmed 92 days ago
Retailer 15
-
$882 USD
View
Price last confirmed 33 days ago
B
Retailer 16
-
$889 USD
SGD 1,202 SGD
View
B
Retailer 17
-
$935 USD
View
B
Retailer 18
-
$945 USD
View
Retailer 19
-
$1,050 USD
View
Price last confirmed 17 days ago
B
Retailer 20
-
$1,100 USD
£866 GBP
View
B
Retailer 21
-
$1,261 USD
View
Most Expensive
B
Queensmith
LG811636178 · Oct 27
$2,235 USD
£1,760 GBP
View
21 more retailers have this diamond
Prices start from $248 USDSave up to $1,987 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
1.28ct Round
$248 USD