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Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG836617751

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836617751

Diamond specifications and retailer prices

From $539 NZD
$304 USD
As of October 30, 2026
Save $2,796 NZD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,336 NZD 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 LG836617751 or 836617751. Listed at 16 retailers as of October 29, 2026, with prices from $539 to $3,336, a $2,796 spread on the same certified stone. Brilliant Earth lists it at $3,336. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617751
Dimensions6.90 × 6.95 × 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
6.90 mm6.95 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617751
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

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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 30
Current: $3,336 NZD|Low: $539 NZD|High: $3,939 NZD|Avg: $1,561 NZD|-15.3%
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
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 7$539 NZD
Retailer 4$598 NZD
Retailer 3$932 NZD
Retailer 2$950 NZD
Retailer 5$988 NZD
Retailer 10$991 NZD
Retailer 12$1,026 NZD
Retailer 9$1,047 NZD
Retailer 6$1,402 NZD
Retailer 16$1,835 NZD
Retailer 14$1,939 NZD
Retailer 8$2,010 NZD
Retailer 13$2,129 NZD
Retailer 11$2,407 NZD
Retailer 15$2,830 NZD
Brilliant Earth$3,336 NZD

27 data points across 16 retailers

16 retailers$539 NZD to $3,336 NZD

A
Cheapest Retailer
-
$539 NZD
$304 USD
Final sale: no returns
A
Retailer 2
-
$598 NZD
$337 USD
View
A
Retailer 3
-
$932 NZD
$525 USD
View
A
Retailer 4
-
$950 NZD
£422 GBP
View
A
Retailer 5
-
$988 NZD
$557 USD
View
A
Retailer 6
-
$991 NZD
€532 EUR
View
A
Retailer 7
-
$1,026 NZD
ZAR 9,344 ZAR
View
A
Retailer 8
-
$1,047 NZD
£465 GBP
View
A
Retailer 9
-
$1,402 NZD
$790 USD
View
B+
Retailer 10
-
$1,835 NZD
$1,034 USD
View
B+
Retailer 11
-
$1,939 NZD
SGD 1,477 SGD
View
B+
Retailer 12
-
$2,010 NZD
$1,133 USD
View
B+
Retailer 13
-
$2,129 NZD
$1,200 USD
View
B+
Retailer 14
-
$2,407 NZD
£1,068 GBP
View
Retailer 15
-
$2,830 NZD
$1,595 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21640958A · Oct 29
$3,336 NZD
$1,880 USD
View
15 more retailers have this diamond
Prices start from $539 NZDSave up to $2,796 NZD

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
$539 NZD