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Radiant|Natural|GIA

1.00ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 2566009790

Certificate GIA 2566009790

Diamond specifications and retailer prices

From $3,371 SGD
$2,637 USD
As of October 30, 2026
Save $3,507 SGD (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,878 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566009790. Listed at 16 retailers as of October 30, 2026, with prices from $3,371 to $6,878, a $3,507 spread on the same certified stone. NZ Jewellers lists it at $6,878. 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

1.00
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566009790
Dimensions6.62 × 5.00 × 3.43 mm
L/W Ratio1.32
Culet sizeNone
Key to symbols
Etch Channel, Feather, Crystal, Indented Natural, Natural
Top View
6.62 mm5.00 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566009790
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

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: $6,878 SGD|Low: $3,371 SGD|High: $7,109 SGD|Avg: $4,436 SGD|-3.3%
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
November 1, 2026
Retailer 6$3,371 SGD
Retailer 3$3,536 SGD
Retailer 7$3,643 SGD
Retailer 4$3,842 SGD
Retailer 8$3,851 SGD
Retailer 2$3,948 SGD
Retailer 14$3,948 SGD
Retailer 10$4,091 SGD
Retailer 15$4,100 SGD
Retailer 13$4,328 SGD
Retailer 5$4,436 SGD
Retailer 12$4,555 SGD
Retailer 11$4,852 SGD
Retailer 9$6,601 SGD
NZ Jewellers$6,878 SGD

27 data points across 15 retailers

16 retailers$3,371 SGD to $6,878 SGD

A
Cheapest Retailer
-
$3,371 SGD
$2,637 USD
A
Retailer 2
-
$3,536 SGD
$2,766 USD
View
B+
Retailer 3
-
$3,643 SGD
$2,850 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,842 SGD
$3,005 USD
View
B+
Retailer 5
-
$3,851 SGD
£2,372 GBP
View
B+
Retailer 6
-
$3,948 SGD
$3,088 USD
View
B+
Retailer 7
-
$3,948 SGD
$3,088 USD
View
B+
Retailer 8
-
$4,091 SGD
£2,519 GBP
View
B+
Retailer 9
-
$4,100 SGD
$3,207 USD
View
B+
Retailer 10
-
$4,328 SGD
€3,224 EUR
View
Retailer 11
-
$4,375 SGD
A$5,266 AUD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
$4,436 SGD
$3,470 USD
View
B+
Retailer 13
-
$4,555 SGD
$3,563 USD
View
B+
Retailer 14
-
$4,852 SGD
ZAR 61,316 ZAR
View
B
Retailer 15
-
$6,601 SGD
£4,066 GBP
View
Most Expensive
B
NZ Jewellers
6f4cbdf4-17be-487f-844a-3f5eb4e11e4a · Oct 30
$6,878 SGD
$5,380 USD
View
15 more retailers have this diamond
Prices start from $3,371 SGDSave up to $3,507 SGD

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
1.00ct Radiant
$3,371 SGD