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Round|Lab Grown|IGI

1.21ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG778645700

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778645700

Diamond specifications and retailer prices

From $211 USD
As of October 29, 2026
Save $2,024 USD (91%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,235 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG778645700 or 778645700. Listed at 24 retailers as of October 27, 2026, with prices from $211 to $2,235, a $2,024 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

1.21
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778645700
Dimensions6.89 × 6.94 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.89 mm6.94 mm1.21 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778645700
Side View
Table 58.0%Crown 33.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.1%

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: $416 USD|Low: $202 USD|High: $1,059 USD|Avg: $519 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$211 USD
Retailer 6$235 USD
Retailer 4$261 USD
Retailer 3$352 USD
Retailer 1$416 USD
Retailer 9$449 USD
Retailer 8$478 USD
Retailer 5$482 USD
Retailer 10$638 USD
Retailer 12$675 USD
Retailer 11$990 USD
Retailer 7$1,053 USD

36 data points across 12 retailers

24 retailers$211 USD to $2,235 USD

A
Cheapest Retailer
-
$211 USD
A
Retailer 2
-
$235 USD
View
Final sale: no returns
A
Retailer 3
-
$244 USD
View
A
Retailer 4
-
$261 USD
View
A
Retailer 5
-
$261 USD
View
A
Retailer 6
-
$294 USD
HK$2,300 HKD
View
B+
Retailer 7
-
$352 USD
View
A
Retailer 8
-
$416 USD
£327 GBP
View
A
Retailer 9
-
$449 USD
ZAR 7,250 ZAR
View
B+
Retailer 10
-
$477 USD
View
B+
Retailer 11
-
$478 USD
€455 EUR
View
B+
Retailer 12
-
$482 USD
£379 GBP
View
B+
Retailer 13
-
$504 USD
View
B+
Retailer 14
-
$638 USD
A$982 AUD
View
B
Retailer 15
-
$675 USD
View
Retailer 16
-
$766 USD
View
Price last confirmed 31 days ago
B
Retailer 17
-
$840 USD
View
B
Retailer 18
-
$849 USD
SGD 1,147 SGD
View
B
Retailer 19
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$893 USD
View
B
Retailer 20
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$893 USD
View
Retailer 21
-
$990 USD
View
Price last confirmed 13 days ago
B+
Retailer 22
-
$1,053 USD
£829 GBP
View
B
Retailer 23
-
$1,228 USD
View
Most Expensive
B
Queensmith
LG778645700 · Oct 27
$2,235 USD
£1,760 GBP
View
23 more retailers have this diamond
Prices start from $211 USDSave up to $2,024 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
1.21ct Round
$211 USD