Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2557796851

Certificate GIA 2557796851

Diamond specifications and retailer prices

From $3,597 USD
HK$28,100 HKD
As of October 31, 2026
Save $4,946 USD (58%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,543 USD at NZ Jewellers · As of October 30, 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 I 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 2557796851. Listed at 10 retailers as of October 30, 2026, with prices from $3,597 to $8,543, a $4,946 spread on the same certified stone. NZ Jewellers lists it at $8,543. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.73°
OriginNatural
Grading LabGIA
CertificateGIA 2557796851
Dimensions8.80 × 6.25 × 4.03 mm
L/W Ratio1.41
Key to symbols
Crystal, Feather, Needle
Top View
8.80 mm6.25 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557796851
Side View
Table 56.0%CrownGirdle: STK-THKPavilion 35.73°Culet: NoneDepth 64.4%

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: Oct 31
Current: $8,543 USD|Low: $3,571 USD|High: $8,953 USD|Avg: $5,540 USD|-4.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3$3,597 USD
Retailer 5$4,153 USD
Retailer 2$4,321 USD
Retailer 9$4,577 USD
Retailer 7$4,904 USD
Retailer 8$4,904 USD
Retailer 10$5,218 USD
Retailer 4$5,569 USD
Retailer 6$7,852 USD
NZ Jewellers$8,543 USD

40 data points across 10 retailers

10 retailers$3,597 USD to $8,543 USD

A
Cheapest Retailer
-
$3,597 USD
HK$28,100 HKD
A
Retailer 2
-
$4,153 USD
€3,955 EUR
View
A
Retailer 3
-
$4,321 USD
View
A
Retailer 4
-
$4,577 USD
SGD 6,185 SGD
View
A
Retailer 5
-
$4,904 USD
View
A
Retailer 6
-
$4,904 USD
View
B+
Retailer 7
-
$5,218 USD
A$8,028 AUD
View
B+
Retailer 8
-
$5,569 USD
€5,304 EUR
View
B+
Retailer 9
-
$7,852 USD
£6,183 GBP
View
Most Expensive
B
NZ Jewellers
565532c0-953b-4f2d-aed4-fc30a2b45f0d · Oct 30
$8,543 USD
View
9 more retailers have this diamond
Prices start from $3,597 USDSave up to $4,946 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
$3,597 USD