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Round|Natural|GIA

1.80ct L SI2 Round Natural Diamond

EX • L/SI2 • GIA 2556637632

Certificate GIA 2556637632

Diamond specifications and retailer prices

From $6,183 NZD
As of November 4, 2026
Save $6,059 NZD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,242 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.8ct natural round diamond

This 1.8ct natural round sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556637632. Listed at 11 retailers as of November 4, 2026, with prices from $6,183 to $12,242, a $6,059 spread on the same certified stone. NZ Jewellers lists it at $12,242. 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

1.80
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556637632
Dimensions7.70 × 7.76 × 4.81 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural
Top View
7.70 mm7.76 mm1.80 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556637632
Side View
Table 59.0%Crown 36°GirdlePavilion 40.8°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $12,242 NZD|Low: $6,183 NZD|High: $12,765 NZD|Avg: $7,950 NZD|-4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$6,183 NZD
Retailer 11$6,929 NZD
Retailer 7$7,027 NZD
Retailer 8$7,027 NZD
Retailer 9$7,027 NZD
Retailer 4$7,030 NZD
Retailer 6$7,288 NZD
Retailer 5$7,900 NZD
Retailer 3$8,108 NZD
Retailer 2$8,811 NZD
NZ Jewellers$12,242 NZD

28 data points across 11 retailers

11 retailers$6,183 NZD to $12,242 NZD

B+
Cheapest Retailer
-
$6,183 NZD
B+
Retailer 2
-
$6,929 NZD
View
B+
Retailer 3
-
$7,027 NZD
View
Retailer 4
-
$7,027 NZD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$7,027 NZD
View
B+
Retailer 6
-
$7,030 NZD
View
B+
Retailer 7
-
$7,288 NZD
View
B
Retailer 8
-
$7,900 NZD
View
B
Retailer 9
-
$8,108 NZD
View
B
Retailer 10
-
$8,811 NZD
View
Most Expensive
B
NZ Jewellers
3efc67b2-70d0-41e6-acb4-38293f932ad5 · Nov 5
$12,242 NZD
$6,882 USD
View
10 more retailers have this diamond
Prices start from $6,183 NZDSave up to $6,059 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.

B+
1.80ct Round
$6,183 NZD