Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 1557154271

Certificate GIA 1557154271

Diamond specifications and retailer prices

From $4,661 USD
As of November 4, 2026
Save $4,032 USD (46%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $9,869 USD at NZ Jewellers · As of October 6, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1557154271. Listed at 25 retailers as of November 1, 2026, with a 87% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1557154271
Dimensions7.35 × 5.83 × 4.00 mm
L/W Ratio1.26
Culet sizeNone
Top View
7.35 mm5.83 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557154271
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

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: Nov 4
Current: $9,869 USD|Low: $4,523 USD|High: $9,869 USD|Avg: $6,548 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
November 7, 2026
Retailer 13$4,933 USD
Retailer 4$5,010 USD
Retailer 11$5,346 USD
Retailer 5$5,393 USD
Retailer 6$5,529 USD
Retailer 12$5,658 USD
Retailer 2$5,699 USD
Retailer 3$6,168 USD
Retailer 7$6,411 USD
Retailer 8$7,199 USD
Retailer 9$8,693 USD
Retailer 10$9,563 USD
NZ Jewellers$9,869 USD

31 data points across 13 retailers

25 retailers$4,661 USD to $8,693 USD

A
Cheapest Retailer
-
$4,661 USD
A
Retailer 2
-
$4,933 USD
View
Final sale: no returns
A
Retailer 3
-
$4,975 USD
View
A
Retailer 4
-
$5,010 USD
View
B+
Retailer 5
-
$5,286 USD
View
Retailer 6
-
$5,346 USD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$5,346 USD
View
Retailer 8
-
$5,346 USD
View
Price last confirmed 16 days ago
B+
Retailer 9
-
$5,393 USD
View
A
Retailer 10
-
$5,529 USD
View
B+
Retailer 11
-
$5,658 USD
View
B+
Retailer 12
-
$5,699 USD
View
B+
Retailer 13
-
$5,750 USD
View
B+
Retailer 14
-
$5,750 USD
View
B+
Retailer 15
-
$5,940 USD
View
B+
Retailer 16
-
$6,051 USD
View
Retailer 17
-
$6,168 USD
View
Price last confirmed 29 days ago
Retailer 18
-
$6,168 USD
View
Price last confirmed 17 days ago
B+
Retailer 19
-
$6,411 USD
View
Retailer 20
-
$6,508 USD
View
Price last confirmed 23 days ago
B
Retailer 21
-
$7,199 USD
View
B
Retailer 22
-
$8,693 USD
View
Retailer 23
-
$9,563 USD
View
Price last confirmed 10 days ago
Retailer 24
-
$9,869 USD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
8be071d4-8e55-4112-a1c0-9c595306d580 · Oct 6
$9,869 USD
View
Price last confirmed 31 days ago
24 more retailers have this diamond
Prices start from $4,661 USDSave up to $4,032 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 Radiant
$4,661 USD