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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 $2,733 NZD
As of November 1, 2026
Save $5,625 NZD (67%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $8,357 NZD 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 $2,733 to $8,357, a $5,625 spread on the same certified stone. NZ Jewellers lists it at $8,357. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,357 NZD|Low: $2,626 NZD|High: $8,357 NZD|Avg: $4,156 NZD
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
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 10$2,733 NZD
Retailer 12$2,829 NZD
Retailer 11$2,865 NZD
Retailer 6$3,105 NZD
Retailer 8$3,105 NZD
Retailer 14$3,229 NZD
Retailer 7$3,247 NZD
Retailer 21$3,305 NZD
Retailer 13$3,500 NZD
Retailer 20$3,500 NZD
Retailer 9$3,583 NZD
Retailer 16$3,626 NZD
Retailer 17$3,676 NZD
Retailer 2$3,754 NZD
Retailer 18$4,043 NZD
Retailer 15$4,295 NZD
Retailer 19$4,641 NZD
Retailer 4$5,103 NZD
Retailer 3$6,002 NZD
Retailer 5$6,265 NZD
NZ Jewellers$8,357 NZD

29 data points across 21 retailers

25 retailers$2,733 NZD to $8,357 NZD

A
Cheapest Retailer
-
$2,733 NZD
A
Retailer 2
-
$2,829 NZD
View
A
Retailer 3
-
$2,865 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,105 NZD
View
Retailer 5
-
$3,105 NZD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$3,123 NZD
View
A
Retailer 7
-
$3,229 NZD
View
A
Retailer 8
-
$3,233 NZD
View
A
Retailer 9
-
$3,247 NZD
View
B+
Retailer 10
-
$3,305 NZD
View
B+
Retailer 11
-
$3,500 NZD
View
B+
Retailer 12
-
$3,500 NZD
View
B+
Retailer 13
-
$3,583 NZD
View
B+
Retailer 14
-
$3,626 NZD
View
B+
Retailer 15
-
$3,676 NZD
View
B+
Retailer 16
-
$3,754 NZD
View
B+
Retailer 17
-
$4,043 NZD
View
B+
Retailer 18
-
$4,082 NZD
View
B+
Retailer 19
-
$4,295 NZD
View
Retailer 20
-
$4,470 NZD
View
Price last confirmed 32 days ago
B+
Retailer 21
-
$4,641 NZD
View
B+
Retailer 22
-
$5,103 NZD
View
B
Retailer 23
-
$6,002 NZD
View
Retailer 24
-
$6,265 NZD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
b6d2e8fe-030a-47c9-9295-07942ee8031c · Nov 5
$8,357 NZD
$4,633 USD
View
24 more retailers have this diamond
Prices start from $2,733 NZDSave up to $5,625 NZD

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
$2,733 NZD