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Oval|Natural|GIA

1.50ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1555376298

Certificate GIA 1555376298

Diamond specifications and retailer prices

From $4,529 USD
As of November 3, 2026
Save $4,932 USD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,859 USD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval 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 1555376298. Listed at 20 retailers as of November 2, 2026, with a 109% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555376298
Dimensions8.64 × 6.26 × 3.97 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Indented Natural, Needle
Top View
8.64 mm6.26 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555376298
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.4%

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 3
Current: $6,100 USD|Low: $4,529 USD|High: $9,681 USD|Avg: $6,240 USD|-3.0%
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
November 4, 2026
Retailer 4$4,529 USD
Retailer 5$4,862 USD
Retailer 2$5,160 USD
Retailer 10$5,370 USD
Retailer 16$5,430 USD
Retailer 15$5,742 USD
Retailer 14$5,799 USD
Retailer 12$6,051 USD
Retailer 1$6,100 USD
Retailer 7$6,160 USD
Retailer 9$6,321 USD
Retailer 8$6,418 USD
Retailer 3$6,578 USD
Retailer 6$7,200 USD
Retailer 13$7,890 USD
Retailer 11$9,461 USD

27 data points across 16 retailers

20 retailers$4,529 USD to $9,461 USD

A
Cheapest Retailer
-
$4,529 USD
A
Retailer 2
-
$4,862 USD
View
A
Retailer 3
-
$5,160 USD
View
B+
Retailer 4
-
$5,370 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,430 USD
View
B+
Retailer 6
-
$5,742 USD
View
B+
Retailer 7
-
$5,799 USD
View
Retailer 8
-
$5,882 USD
View
Price last confirmed 48 days ago
B+
Retailer 9
-
$6,051 USD
View
B+
Retailer 10
-
$6,100 USD
View
B+
Retailer 11
-
$6,128 USD
View
Retailer 12
-
$6,160 USD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$6,321 USD
View
Retailer 14
-
$6,418 USD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
$6,578 USD
View
Retailer 16
-
$6,787 USD
View
Price last confirmed 48 days ago
B+
Retailer 17
-
$7,200 USD
View
B+
Retailer 18
-
$7,890 USD
View
B
Retailer 19
-
$9,461 USD
View
Most Expensive
NZ Jewellers
066f5159-0628-47f0-b3b5-85d10d42868f · Sep 19
$10,859 USD
View
Price last confirmed 47 days ago
19 more retailers have this diamond
Prices start from $4,529 USDSave up to $4,932 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 Oval
$4,529 USD