Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6525508015

Certificate GIA 6525508015

Diamond specifications and retailer prices

From $2,188 USD
As of November 4, 2026
Save $2,782 USD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,947 USD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525508015. Listed at 20 retailers as of November 4, 2026, with a 127% 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

1.00
Carat
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6525508015
Dimensions6.40 × 6.37 × 3.91 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525508015
Side View
Table 59.0%Crown 36°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,039 USD|Low: $2,188 USD|High: $5,043 USD|Avg: $3,335 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$2,188 USD
Retailer 5$2,280 USD
Retailer 6$2,549 USD
Retailer 10$2,621 USD
Retailer 2$2,626 USD
Retailer 3$2,993 USD
Retailer 1$3,039 USD
Retailer 4$3,303 USD
Retailer 7$4,970 USD
Retailer 9$5,029 USD

35 data points across 10 retailers

20 retailers$2,188 USD to $4,970 USD

A
Cheapest Retailer
-
$2,188 USD
A
Retailer 2
-
$2,280 USD
View
A
Retailer 3
-
$2,549 USD
View
A
Retailer 4
-
$2,621 USD
View
A
Retailer 5
-
$2,626 USD
View
Final sale: no returns
A
Retailer 6
-
$2,706 USD
View
Retailer 7
-
$2,844 USD
View
Price last confirmed 29 days ago
Retailer 8
-
$2,844 USD
View
Price last confirmed 29 days ago
Retailer 9
-
$2,844 USD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$2,900 USD
View
Retailer 11
-
$2,954 USD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$2,986 USD
View
B+
Retailer 13
-
$2,993 USD
View
B+
Retailer 14
-
$3,039 USD
View
Retailer 15
-
$3,282 USD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$3,303 USD
View
B
Retailer 17
-
$4,970 USD
View
Retailer 18
-
$5,029 USD
View
Price last confirmed 9 days ago
Retailer 19
-
$5,947 USD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
c33334bf-ecea-4bc2-9b6f-720edc750f50 · Oct 3
$5,947 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $2,188 USDSave up to $2,782 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
1.00ct Round
$2,188 USD