Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG799676989

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799676989

Diamond specifications and retailer prices

From $634 USD
As of October 29, 2026
Save $2,573 USD (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,630 USD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore 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 LG799676989 or 799676989. Listed at 21 retailers as of October 29, 2026, with a 406% 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 angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799676989
Dimensions7.02 × 7.05 × 4.29 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.02 mm7.05 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799676989
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.9%

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 29
Current: $5,630 USD|Low: $634 USD|High: $5,940 USD|Avg: $1,717 USD|-5.2%
Do Amore Diamonds
Retailer 2
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Retailer 21
October 29, 2026
Retailer 7$634 USD
Retailer 21$690 USD
Retailer 3$693 USD
Retailer 8$710 USD
Retailer 5$736 USD
Retailer 9$736 USD
Retailer 20$915 USD
Retailer 4$972 USD
Retailer 19$1,011 USD
Retailer 6$1,204 USD
Retailer 2$1,293 USD
Retailer 15$1,385 USD
Retailer 16$1,493 USD
Retailer 17$1,585 USD
Retailer 18$1,880 USD
Retailer 12$2,284 USD
Retailer 10$2,560 USD
Retailer 14$2,911 USD
Retailer 11$2,937 USD
Retailer 13$3,207 USD
Do Amore Diamonds$5,630 USD

28 data points across 21 retailers

21 retailers$634 USD to $3,207 USD

A
Cheapest Retailer
-
$634 USD
A
Retailer 2
-
$690 USD
View
A
Retailer 3
-
$693 USD
View
A
Retailer 4
-
$710 USD
View
Final sale: no returns
A
Retailer 5
-
$736 USD
View
A
Retailer 6
-
$736 USD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$915 USD
View
B+
Retailer 8
-
$972 USD
View
B+
Retailer 9
-
$1,011 USD
HK$7,900 HKD
View
B+
Retailer 10
-
$1,204 USD
View
B+
Retailer 11
-
$1,293 USD
£1,018 GBP
View
B+
Retailer 12
-
$1,385 USD
£1,091 GBP
View
B+
Retailer 13
-
$1,493 USD
ZAR 24,124 ZAR
View
B+
Retailer 14
-
$1,585 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$1,880 USD
View
B
Retailer 16
-
$2,284 USD
View
B
Retailer 17
-
$2,560 USD
View
B
Retailer 18
-
$2,911 USD
View
B
Retailer 19
-
$2,937 USD
SGD 3,969 SGD
View
B
Retailer 20
-
$3,207 USD
£2,525 GBP
View
Most Expensive
B
Do Amore Diamonds
27-43C1B51C2 · Oct 28
$5,630 USD
View
Price under review
20 more retailers have this diamond
Prices start from $634 USDSave up to $2,573 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
$634 USD