Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 2557139819

Certificate GIA 2557139819

Diamond specifications and retailer prices

From $3,482 USD
HK$27,200 HKD
As of November 2, 2026
Save $3,858 USD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,715 USD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557139819. Listed at 20 retailers as of November 1, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2557139819
Dimensions7.30 × 5.60 × 3.92 mm
L/W Ratio1.30
Top View
7.30 mm5.60 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557139819
Side View
Table 67.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.9%

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: Nov 2
Current: $3,482 USD|Low: $3,430 USD|High: $7,713 USD|Avg: $4,829 USD|-5.6%
Retailer 1
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
November 2, 2026
Retailer 1$3,482 USD
Retailer 17$3,674 USD
Retailer 15$3,912 USD
Retailer 10$3,927 USD
Retailer 3$3,948 USD
Retailer 6$4,025 USD
Retailer 18$4,119 USD
Retailer 8$4,157 USD
Retailer 13$4,183 USD
Retailer 5$4,212 USD
Retailer 19$4,280 USD
Retailer 16$4,391 USD
Retailer 7$4,486 USD
Retailer 11$5,038 USD
Retailer 14$5,293 USD
Retailer 4$5,751 USD
Retailer 12$5,950 USD
Retailer 9$7,314 USD
Retailer 2$7,339 USD

24 data points across 19 retailers

20 retailers$3,482 USD to $7,339 USD

A
Cheapest Retailer
-
$3,482 USD
HK$27,200 HKD
A
Retailer 2
-
$3,674 USD
View
A
Retailer 3
-
$3,912 USD
View
Final sale: no returns
A
Retailer 4
-
$3,927 USD
View
A
Retailer 5
-
$3,948 USD
€3,760 EUR
View
A
Retailer 6
-
$4,025 USD
View
A
Retailer 7
-
$4,119 USD
A$6,338 AUD
View
A
Retailer 8
-
$4,157 USD
View
A
Retailer 9
-
$4,183 USD
View
A
Retailer 10
-
$4,212 USD
View
A
Retailer 11
-
$4,280 USD
View
A
Retailer 12
-
$4,391 USD
£3,457 GBP
View
A
Retailer 13
-
$4,486 USD
View
Retailer 14
-
$5,038 USD
A$7,750 AUD
View
Price last confirmed 23 days ago
A
Retailer 15
-
$5,293 USD
€5,041 EUR
View
B+
Retailer 16
-
$5,751 USD
ZAR 92,900 ZAR
View
B+
Retailer 17
-
$5,950 USD
View
Retailer 18
-
$7,314 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$7,339 USD
£5,779 GBP
View
Most Expensive
NZ Jewellers
b734cccf-65a5-4d93-bb26-173a12bb62c9 · Sep 29
$8,715 USD
View
Price last confirmed 33 days ago
19 more retailers have this diamond
Prices start from $3,482 USDSave up to $3,858 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
1.50ct Radiant
$3,482 USD