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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555665977

Certificate GIA 1555665977

Diamond specifications and retailer prices

From $4,934 USD
Save $4,839 USD (50%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,773 USD at NZ Jewellers
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555665977. Listed at 12 retailers, with prices from $4,934 to $9,773 at NZ Jewellers, a $4,839 spread on the same certified stone. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.22°
OriginNatural
Grading LabGIA
CertificateGIA 1555665977
Dimensions7.78 × 5.83 × 3.99 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.78 mm5.83 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555665977
Side View
Table 68.0%Crown 43.22°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.4%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $9,773 USD|Low: $4,934 USD|High: $9,773 USD|Avg: $6,205 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 1, 2026
Retailer 4$4,934 USD
Retailer 12$5,145 USD
Retailer 6$5,686 USD
Retailer 5$5,843 USD
Retailer 9$5,843 USD
Retailer 11$5,999 USD
Retailer 8$6,096 USD
Retailer 2$6,265 USD
Retailer 10$6,742 USD
Retailer 3$6,967 USD
Retailer 7$8,712 USD
NZ Jewellers$9,773 USD

31 data points across 12 retailers

12 retailers$4,934 USD to $9,773 USD

A
Cheapest Retailer
-
$4,934 USD
B+
Retailer 2
-
$5,145 USD
View
Price last confirmed 33 days ago
B+
Retailer 3
-
$5,698 USD
£4,487 GBP
View
B+
Retailer 4
-
$5,843 USD
View
B+
Retailer 5
-
$5,843 USD
View
B+
Retailer 6
-
$5,999 USD
View
B+
Retailer 7
-
$6,096 USD
View
B+
Retailer 8
-
$6,265 USD
€5,967 EUR
View
B
Retailer 9
-
$6,742 USD
View
B
Retailer 10
-
$6,967 USD
ZAR 112,545 ZAR
View
Price last confirmed 43 days ago
B
Retailer 11
-
$8,712 USD
£6,860 GBP
View
Most Expensive
B
NZ Jewellers
01f18091-09c5-4afc-8fc5-90e565caea7f · Sep 30
$9,773 USD
View
11 more retailers have this diamond
Prices start from $4,934 USDSave up to $4,839 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.

A
1.51ct Radiant
$4,934 USD