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Round|Natural|GIA

0.80ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1555455999

Certificate GIA 1555455999

Diamond specifications and retailer prices

From $1,515 USD
As of November 1, 2026
Save $3,118 USD (67%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,633 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.8ct natural round diamond

This 0.8ct natural round sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555455999. Listed at 25 retailers as of November 1, 2026, with prices from $1,515 to $4,633, a $3,118 spread on the same certified stone. NZ Jewellers lists it at $4,633. 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

0.80
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555455999
Dimensions5.90 × 5.95 × 3.70 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Crystal
Top View
5.90 mm5.95 mm0.80 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555455999
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.5%

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 1
Current: $4,633 USD|Low: $1,456 USD|High: $4,633 USD|Avg: $2,304 USD
NZ Jewellers
Retailer 2
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Retailer 5
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Retailer 11
Retailer 12
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Retailer 21
November 6, 2026
Retailer 10$1,515 USD
Retailer 12$1,568 USD
Retailer 11$1,588 USD
Retailer 6$1,721 USD
Retailer 8$1,721 USD
Retailer 14$1,790 USD
Retailer 7$1,800 USD
Retailer 21$1,832 USD
Retailer 13$1,940 USD
Retailer 20$1,940 USD
Retailer 9$1,986 USD
Retailer 16$2,010 USD
Retailer 17$2,038 USD
Retailer 2$2,081 USD
Retailer 18$2,241 USD
Retailer 15$2,381 USD
Retailer 19$2,573 USD
Retailer 4$2,829 USD
Retailer 3$3,327 USD
Retailer 5$3,473 USD
NZ Jewellers$4,633 USD

29 data points across 21 retailers

25 retailers$1,515 USD to $4,633 USD

A
Cheapest Retailer
-
$1,515 USD
A
Retailer 2
-
$1,568 USD
View
A
Retailer 3
-
$1,588 USD
View
Final sale: no returns
A
Retailer 4
-
$1,721 USD
View
Retailer 5
-
$1,721 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,731 USD
View
A
Retailer 7
-
$1,790 USD
View
A
Retailer 8
-
$1,792 USD
View
A
Retailer 9
-
$1,800 USD
View
B+
Retailer 10
-
$1,832 USD
View
B+
Retailer 11
-
$1,940 USD
View
B+
Retailer 12
-
$1,940 USD
View
B+
Retailer 13
-
$1,986 USD
View
B+
Retailer 14
-
$2,010 USD
View
B+
Retailer 15
-
$2,038 USD
View
B+
Retailer 16
-
$2,081 USD
View
B+
Retailer 17
-
$2,241 USD
View
B+
Retailer 18
-
$2,263 USD
View
B+
Retailer 19
-
$2,381 USD
View
Retailer 20
-
$2,478 USD
View
Price last confirmed 32 days ago
B+
Retailer 21
-
$2,573 USD
View
B+
Retailer 22
-
$2,829 USD
View
B
Retailer 23
-
$3,327 USD
View
Retailer 24
-
$3,473 USD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
b6d2e8fe-030a-47c9-9295-07942ee8031c · Nov 5
$4,633 USD
View
24 more retailers have this diamond
Prices start from $1,515 USDSave up to $3,118 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
0.80ct Round
$1,515 USD