CaratHunter
Plans
Round|Natural|GIA

0.40ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566314641

Certificate GIA 2566314641

Diamond specifications and retailer prices

From $279 USD
₹26,593 INR
As of October 30, 2026
Save $1,196 USD (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,475 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural round diamond

This 0.4ct natural round sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566314641. Listed at 19 retailers as of October 30, 2026, with prices from $279 to $1,475, a $1,196 spread on the same certified stone. NZ Jewellers lists it at $1,475. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566314641
Dimensions4.70 × 4.71 × 2.93 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
4.70 mm4.71 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566314641
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.2%

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 30
Current: $1,475 USD|Low: $279 USD|High: $1,500 USD|Avg: $603 USD|-1.7%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 14$279 USD
Retailer 3$326 USD
Retailer 8$355 USD
Retailer 5$391 USD
Retailer 9$411 USD
Retailer 13$412 USD
Retailer 10$414 USD
Retailer 6$421 USD
Retailer 18$504 USD
Retailer 11$518 USD
Retailer 7$532 USD
Retailer 15$558 USD
Retailer 12$583 USD
Retailer 2$632 USD
Retailer 17$781 USD
Retailer 4$909 USD
Retailer 16$1,198 USD
NZ Jewellers$1,475 USD

21 data points across 18 retailers

19 retailers$279 USD to $1,475 USD

A
Cheapest Retailer
-
$279 USD
₹26,593 INR
A
Retailer 2
-
$326 USD
View
A
Retailer 3
-
$333 USD
HK$2,600 HKD
View
Retailer 4
-
$355 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$391 USD
View
A
Retailer 6
-
$411 USD
SGD 555 SGD
View
A
Retailer 7
-
$412 USD
A$633 AUD
View
A
Retailer 8
-
$414 USD
SGD 560 SGD
View
A
Retailer 9
-
$421 USD
View
B+
Retailer 10
-
$504 USD
£397 GBP
View
B+
Retailer 11
-
$518 USD
View
B+
Retailer 12
-
$532 USD
View
B+
Retailer 13
-
$558 USD
View
B+
Retailer 14
-
$583 USD
View
B+
Retailer 15
-
$632 USD
€602 EUR
View
B
Retailer 16
-
$781 USD
£615 GBP
View
B
Retailer 17
-
$909 USD
£716 GBP
View
B
Retailer 18
-
$1,198 USD
CA$1,663 CAD
View
Most Expensive
B
NZ Jewellers
9f063803-f3bf-4fed-8ed7-d764fd13c4a4 · Oct 30
$1,475 USD
View
18 more retailers have this diamond
Prices start from $279 USDSave up to $1,196 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
0.40ct Round
$279 USD