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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG784650873

Shape and cutting style on the report: Round brilliant

Certificate IGI LG784650873

Diamond specifications and retailer prices

From $647 USD
As of October 29, 2026
Save $2,532 USD (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,179 USD at MOH London · As of October 29, 2026
View at MOH London

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784650873 or 784650873. Listed at 21 retailers as of October 29, 2026, with prices from $647 to $3,179, a $2,532 spread on the same certified stone. MOH London lists it at $3,179. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784650873
Dimensions6.88 × 6.92 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
6.88 mm6.92 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784650873
Side View
Table 57.0%Crown 34.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.9%

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: $3,179 USD|Low: $621 USD|High: $3,547 USD|Avg: $1,588 USD|-10.3%
MOH London
Retailer 2
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Retailer 11
Retailer 12
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Retailer 19
October 31, 2026
Retailer 16$647 USD
Retailer 5$704 USD
Retailer 9$724 USD
Retailer 4$751 USD
Retailer 7$846 USD
Retailer 3$870 USD
Retailer 14$930 USD
Retailer 19$983 USD
Retailer 12$1,196 USD
Retailer 2$1,218 USD
Retailer 11$1,226 USD
Retailer 13$1,379 USD
Retailer 15$1,917 USD
Retailer 18$2,111 USD
Retailer 10$2,530 USD
Retailer 8$2,590 USD
Retailer 6$2,620 USD
Retailer 17$2,730 USD
MOH London$3,179 USD

43 data points across 19 retailers

21 retailers$647 USD to $3,179 USD

A
Cheapest Retailer
-
$647 USD
A
Retailer 2
-
$704 USD
View
B+
Retailer 3
-
$724 USD
View
Final sale: no returns
Retailer 4
-
$751 USD
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$751 USD
View
B+
Retailer 6
-
$846 USD
View
B+
Retailer 7
-
$870 USD
HK$6,800 HKD
View
B+
Retailer 8
-
$930 USD
View
B+
Retailer 9
-
$983 USD
View
B+
Retailer 10
-
$1,196 USD
£941 GBP
View
B+
Retailer 11
-
$1,218 USD
€1,160 EUR
View
B+
Retailer 12
-
$1,226 USD
View
B+
Retailer 13
-
$1,379 USD
ZAR 22,281 ZAR
View
Retailer 14
-
$1,566 USD
View
Price last confirmed 76 days ago
B
Retailer 15
-
$1,917 USD
View
B
Retailer 16
-
$2,111 USD
View
B
Retailer 17
-
$2,530 USD
SGD 3,419 SGD
View
B
Retailer 18
-
$2,590 USD
View
B
Retailer 19
-
$2,620 USD
View
B
Retailer 20
-
$2,730 USD
View
Most Expensive
B
MOH London
LG784650873 · Oct 29
$3,179 USD
£2,503 GBP
View
20 more retailers have this diamond
Prices start from $647 USDSave up to $2,532 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
$647 USD