Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG800679863

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800679863

Diamond specifications and retailer prices

From $499 USD
HK$3,900 HKD
As of October 28, 2026
Save $2,031 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,530 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800679863 or 800679863. Listed at 13 retailers as of October 28, 2026, with prices from $499 to $2,530, a $2,031 spread on the same certified stone. Brilliant Earth lists it at $2,530. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679863
Dimensions6.93 × 6.97 × 4.31 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
6.93 mm6.97 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679863
Side View
Table 57.0%Crown 34.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $2,530 USD|Low: $499 USD|High: $2,950 USD|Avg: $1,229 USD|-14.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 13$499 USD
Retailer 3$610 USD
Retailer 6$702 USD
Retailer 8$741 USD
Retailer 2$771 USD
Retailer 7$792 USD
Retailer 10$816 USD
Retailer 11$986 USD
Retailer 4$1,429 USD
Retailer 5$1,610 USD
Retailer 12$1,653 USD
Retailer 9$1,688 USD
Brilliant Earth$2,530 USD

41 data points across 13 retailers

13 retailers$499 USD to $2,530 USD

A
Cheapest Retailer
-
$499 USD
HK$3,900 HKD
A
Retailer 2
-
$610 USD
View
A
Retailer 3
-
$702 USD
€669 EUR
View
A
Retailer 4
-
$741 USD
ZAR 11,975 ZAR
View
A
Retailer 5
-
$771 USD
£607 GBP
View
A
Retailer 6
-
$792 USD
A$1,218 AUD
View
A
Retailer 7
-
$816 USD
View
B+
Retailer 8
-
$986 USD
View
B+
Retailer 9
-
$1,429 USD
View
B
Retailer 10
-
$1,610 USD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
$1,653 USD
View
B+
Retailer 12
-
$1,688 USD
£1,329 GBP
View
Most Expensive
B
Brilliant Earth
20936621A · Oct 29
$2,530 USD
View
12 more retailers have this diamond
Prices start from $499 USDSave up to $2,031 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
$499 USD