CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG770636656

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770636656

Diamond specifications and retailer prices

From $388 USD
As of October 29, 2026
Save $3,432 USD (90%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $3,820 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG770636656 or 770636656. Listed at 27 retailers as of October 29, 2026, with prices from $388 to $3,820, a $3,432 spread on the same certified stone. Brilliant Earth lists it at $3,820. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770636656
Dimensions7.29 × 7.36 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.29 mm7.36 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770636656
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.7%

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: $3,820 USD|Low: $374 USD|High: $3,820 USD|Avg: $964 USD
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
October 30, 2026
Retailer 7$388 USD
Retailer 2$435 USD
Retailer 3$435 USD
Retailer 5$481 USD
Retailer 24$481 USD
Retailer 10$525 USD
Retailer 13$618 USD
Retailer 23$630 USD
Retailer 14$648 USD
Retailer 12$725 USD
Retailer 21$759 USD
Retailer 20$761 USD
Retailer 22$827 USD
Retailer 18$870 USD
Retailer 9$985 USD
Retailer 19$1,117 USD
Retailer 4$1,136 USD
Retailer 16$1,536 USD
Retailer 6$1,547 USD
Retailer 11$1,585 USD
Retailer 15$1,794 USD
Retailer 17$1,801 USD
Retailer 8$1,891 USD
Brilliant Earth$3,820 USD

26 data points across 24 retailers

27 retailers$388 USD to $3,820 USD

A
Cheapest Retailer
-
$388 USD
A
Retailer 2
-
$435 USD
View
Final sale: no returns
A
Retailer 3
-
$435 USD
View
A
Retailer 4
-
$481 USD
View
A
Retailer 5
-
$481 USD
View
A
Retailer 6
-
$525 USD
HK$4,100 HKD
View
A
Retailer 7
-
$618 USD
£487 GBP
View
A
Retailer 8
-
$630 USD
View
A
Retailer 9
-
$648 USD
View
A
Retailer 10
-
$725 USD
View
A
Retailer 11
-
$759 USD
A$1,168 AUD
View
A
Retailer 12
-
$761 USD
€725 EUR
View
A
Retailer 13
-
$827 USD
ZAR 13,362 ZAR
View
A
Retailer 14
-
$870 USD
£685 GBP
View
B+
Retailer 15
-
$985 USD
View
B+
Retailer 16
-
$1,117 USD
A$1,718 AUD
View
Retailer 17
-
$1,136 USD
View
B+
Retailer 18
-
$1,153 USD
View
B+
Retailer 19
-
$1,536 USD
SGD 2,075 SGD
View
B+
Retailer 20
-
$1,547 USD
View
B+
Retailer 21
-
$1,585 USD
View
B
Retailer 22
-
$1,684 USD
View
Retailer 23
-
$1,730 USD
A$2,662 AUD
View
Price last confirmed 30 days ago
B
Retailer 24
-
$1,794 USD
View
B
Retailer 25
-
$1,801 USD
View
B
Retailer 26
-
$1,891 USD
£1,489 GBP
View
Most Expensive
B
Brilliant Earth
20708800A · Oct 30
$3,820 USD
View
26 more retailers have this diamond
Prices start from $388 USDSave up to $3,432 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
1.51ct Round
$388 USD