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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 $2,164 AUD
As of November 1, 2026
Save $4,454 AUD (67%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $6,618 AUD 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 $2,164 to $6,618, a $4,454 spread on the same certified stone. NZ Jewellers lists it at $6,618. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $6,618 AUD|Low: $2,080 AUD|High: $6,618 AUD|Avg: $3,291 AUD
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$2,164 AUD
Retailer 12$2,240 AUD
Retailer 11$2,268 AUD
Retailer 6$2,458 AUD
Retailer 8$2,458 AUD
Retailer 14$2,557 AUD
Retailer 7$2,571 AUD
Retailer 21$2,617 AUD
Retailer 13$2,771 AUD
Retailer 20$2,771 AUD
Retailer 9$2,837 AUD
Retailer 16$2,871 AUD
Retailer 17$2,911 AUD
Retailer 2$2,973 AUD
Retailer 18$3,201 AUD
Retailer 15$3,401 AUD
Retailer 19$3,676 AUD
Retailer 4$4,041 AUD
Retailer 3$4,753 AUD
Retailer 5$4,961 AUD
NZ Jewellers$6,618 AUD

29 data points across 21 retailers

25 retailers$2,164 AUD to $6,618 AUD

A
Cheapest Retailer
-
$2,164 AUD
A
Retailer 2
-
$2,240 AUD
View
A
Retailer 3
-
$2,268 AUD
View
Final sale: no returns
A
Retailer 4
-
$2,458 AUD
View
Retailer 5
-
$2,458 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$2,473 AUD
View
A
Retailer 7
-
$2,557 AUD
View
A
Retailer 8
-
$2,560 AUD
View
A
Retailer 9
-
$2,571 AUD
View
B+
Retailer 10
-
$2,617 AUD
View
B+
Retailer 11
-
$2,771 AUD
View
B+
Retailer 12
-
$2,771 AUD
View
B+
Retailer 13
-
$2,837 AUD
View
B+
Retailer 14
-
$2,871 AUD
View
B+
Retailer 15
-
$2,911 AUD
View
B+
Retailer 16
-
$2,973 AUD
View
B+
Retailer 17
-
$3,201 AUD
View
B+
Retailer 18
-
$3,233 AUD
View
B+
Retailer 19
-
$3,401 AUD
View
Retailer 20
-
$3,540 AUD
View
Price last confirmed 32 days ago
B+
Retailer 21
-
$3,676 AUD
View
B+
Retailer 22
-
$4,041 AUD
View
B
Retailer 23
-
$4,753 AUD
View
Retailer 24
-
$4,961 AUD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
b6d2e8fe-030a-47c9-9295-07942ee8031c · Nov 5
$6,618 AUD
$4,633 USD
View
24 more retailers have this diamond
Prices start from $2,164 AUDSave up to $4,454 AUD

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
$2,164 AUD