Oval|Natural|GIA

0.40ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1555162153

Certificate GIA 1555162153

Diamond specifications and retailer prices

From $600 USD
As of October 26, 2026
Save $385 USD (39%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,388 USD at MOH London · As of October 26, 2026
View at MOH London

About this 0.4ct natural oval diamond

This 0.4ct natural oval sits in the sub-half-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 1555162153. Listed at 15 retailers as of October 26, 2026, with a 64% 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

0.40
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.98°
Pavilion angle40.46°
OriginNatural
Grading LabGIA
CertificateGIA 1555162153
Dimensions6.15 × 4.14 × 2.52 mm
L/W Ratio1.49
Culet sizeNone
Top View
6.15 mm4.14 mm0.40 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555162153
Side View
Table 59.0%Crown 34.98°Girdle: MED-STKPavilion 40.46°Culet: NoneDepth 60.7%

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: Oct 26
Current: $1,388 USD|Low: $461 USD|High: $1,883 USD|Avg: $899 USD
MOH London
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
October 28, 2026
Retailer 10$554 USD
Retailer 3$600 USD
Retailer 6$647 USD
Retailer 12$647 USD
Retailer 14$681 USD
Retailer 4$693 USD
Retailer 7$695 USD
Retailer 2$734 USD
Retailer 9$803 USD
Retailer 11$903 USD
Retailer 8$929 USD
Retailer 13$1,292 USD
MOH London$1,388 USD
Retailer 5$1,883 USD

42 data points across 14 retailers

15 retailers$600 USD to $985 USD

Retailer 1
-
$583 USD
Price last confirmed 16 days ago
B+
Retailer 2
-
$600 USD
View
B
Retailer 3
-
$647 USD
View
B
Retailer 4
-
$681 USD
View
B
Retailer 5
-
$693 USD
View
B
Retailer 6
-
$695 USD
View
B
Retailer 7
-
$706 USD
View
B
Retailer 8
-
$734 USD
£578 GBP
View
B
Retailer 9
-
$803 USD
€765 EUR
View
Retailer 10
-
$903 USD
A$1,389 AUD
View
Price last confirmed 28 days ago
B
Retailer 11
-
$929 USD
ZAR 15,012 ZAR
View
B
Retailer 12
-
$985 USD
View
Retailer 13
-
$1,292 USD
€1,230 EUR
View
Price under review
Most Expensive
MOH London
1BE39C675 · Oct 26
$1,388 USD
£1,093 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $600 USDSave up to $385 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+
0.40ct Oval
$600 USD