Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 1439197082

Certificate GIA 1439197082

Diamond specifications and retailer prices

From $5,708 USD
As of November 6, 2026
Save $6,172 USD (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,880 USD at NZ Jewellers · As of November 5, 2026
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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1439197082. Listed at 17 retailers as of November 5, 2026, with prices from $5,708 to $11,880, a $6,172 spread on the same certified stone. NZ Jewellers lists it at $11,880. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1439197082
Dimensions7.39 × 5.62 × 4.19 mm
L/W Ratio1.31
Key to symbols
Feather, Crystal, Needle
Top View
7.39 mm5.62 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1439197082
Side View
Table 72.0%CrownGirdlePavilionCulet: NoneDepth 74.6%

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: Nov 6
Current: $11,880 USD|Low: $5,657 USD|High: $11,880 USD|Avg: $7,497 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 7, 2026
Retailer 14$5,708 USD
Retailer 7$6,195 USD
Retailer 5$6,556 USD
Retailer 17$6,557 USD
Retailer 6$6,575 USD
Retailer 10$6,656 USD
Retailer 2$6,745 USD
Retailer 15$6,894 USD
Retailer 8$7,032 USD
Retailer 9$7,060 USD
Retailer 3$7,103 USD
Retailer 16$7,212 USD
Retailer 11$7,718 USD
Retailer 4$8,196 USD
Retailer 12$8,666 USD
Retailer 13$10,436 USD
NZ Jewellers$11,880 USD

30 data points across 17 retailers

17 retailers$5,708 USD to $11,880 USD

B+
Cheapest Retailer
-
$5,708 USD
B+
Retailer 2
-
$6,195 USD
View
B
Retailer 3
-
$6,556 USD
View
Final sale: no returns
Retailer 4
-
$6,557 USD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$6,575 USD
View
B
Retailer 6
-
$6,656 USD
View
B
Retailer 7
-
$6,745 USD
View
Retailer 8
-
$6,894 USD
View
Price last confirmed 16 days ago
B
Retailer 9
-
$7,060 USD
View
B
Retailer 10
-
$7,103 USD
View
B
Retailer 11
-
$7,212 USD
View
B
Retailer 12
-
$7,264 USD
View
B
Retailer 13
-
$7,718 USD
View
B
Retailer 14
-
$8,196 USD
View
B
Retailer 15
-
$8,666 USD
View
C
Retailer 16
-
$10,436 USD
View
Most Expensive
C
NZ Jewellers
fa951e26-714d-428c-ba9c-c37894228a87 · Nov 5
$11,880 USD
View
16 more retailers have this diamond
Prices start from $5,708 USDSave up to $6,172 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+
1.51ct Radiant
$5,708 USD