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Round|Lab Grown|IGI

1.20ct D SI2 Round Lab Grown Diamond

VG • D/SI2 • IGI LG800681231

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800681231

Diamond specifications and retailer prices

From $361 USD
£284 GBP
As of November 1, 2026
Save $600 USD (62%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $960 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG800681231 or 800681231. Listed at 4 retailers as of November 1, 2026, with prices from $361 to $960, a $600 spread on the same certified stone. MOH London lists it at $960. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
D
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800681231
Dimensions6.72 × 6.68 × 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
6.72 mm6.68 mm1.20 ctD / SI2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG800681231
Side View
Table 58.0%Crown 36.6°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $960 USD|Low: $333 USD|High: $973 USD|Avg: $474 USD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$357 USD
Retailer 3$361 USD
Retailer 7$371 USD
Retailer 5$455 USD
Retailer 6$460 USD
Retailer 2$520 USD
MOH London$960 USD

16 data points across 7 retailers

4 retailers$361 USD to $960 USD

B+
Cheapest Retailer
-
$361 USD
£284 GBP
B+
Retailer 2
-
$371 USD
View
B
Retailer 3
-
$520 USD
View
Most Expensive
B
MOH London
LG800681231 · Nov 1
$960 USD
£756 GBP
View
3 more retailers have this diamond
Prices start from $361 USDSave up to $600 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.

B+
1.20ct Round
$361 USD