Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG790612054

Shape and cutting style on the report: Round brilliant

Certificate IGI LG790612054

Diamond specifications and retailer prices

From $1,648 USD
As of October 29, 2026
Save $1,935 USD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,814 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 LG790612054 or 790612054. Listed at 20 retailers as of October 27, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle33.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790612054
Dimensions7.04 × 7.08 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.04 mm7.08 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790612054
Side View
Table 57.0%Crown 33.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.2%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $2,690 USD|Low: $1,582 USD|High: $6,386 USD|Avg: $2,920 USD|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 29, 2026
Retailer 17$1,648 USD
Retailer 14$1,660 USD
Retailer 7$1,793 USD
Retailer 9$1,845 USD
Retailer 2$1,912 USD
Retailer 4$1,912 USD
Retailer 6$2,039 USD
Retailer 16$2,080 USD
Retailer 1$2,690 USD
Retailer 3$3,004 USD
Retailer 12$3,020 USD
Retailer 15$3,296 USD
Retailer 13$3,390 USD
Retailer 10$3,514 USD
Retailer 8$3,583 USD
Retailer 11$5,489 USD
Retailer 5$6,386 USD

43 data points across 17 retailers

20 retailers$1,648 USD to $3,583 USD

B+
Cheapest Retailer
-
$1,648 USD
B+
Retailer 2
-
$1,660 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$1,793 USD
View
B+
Retailer 4
-
$1,845 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,912 USD
View
B+
Retailer 6
-
$1,912 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,039 USD
View
B+
Retailer 8
-
$2,080 USD
View
B
Retailer 9
-
$2,202 USD
HK$17,200 HKD
View
B
Retailer 10
-
$2,690 USD
£2,118 GBP
View
B
Retailer 11
-
$3,004 USD
View
B
Retailer 12
-
$3,020 USD
€2,876 EUR
View
B
Retailer 13
-
$3,296 USD
View
B
Retailer 14
-
$3,390 USD
View
B
Retailer 15
-
$3,514 USD
ZAR 56,770 ZAR
View
B
Retailer 16
-
$3,583 USD
View
B
Retailer 17
-
$5,489 USD
£4,322 GBP
View
Price under review
Most Expensive
B
Reve Diamonds
5B170FEB1 · Oct 28
$5,814 USD
View
Price under review
17 more retailers have this diamond
Prices start from $1,648 USDSave up to $1,935 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+
1.28ct Round
$1,648 USD