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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2554628290

Certificate GIA 2554628290

Diamond specifications and retailer prices

From $11,774 NZD
As of November 6, 2026
Save $10,829 NZD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $22,603 NZD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554628290. Listed at 10 retailers as of November 2, 2026, with prices from $11,774 to $22,603, a $10,829 spread on the same certified stone. NZ Jewellers lists it at $22,603. 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

1.55
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2554628290
Dimensions7.34 × 7.39 × 4.62 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
7.34 mm7.39 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554628290
Side View
Table 58.0%Crown 34.5°Girdle: STK-STKPavilion 41.6°Culet: NoneDepth 62.7%

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 6
Current: $22,603 NZD|Low: $10,760 NZD|High: $22,603 NZD|Avg: $14,289 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
November 6, 2026
Retailer 3$10,760 NZD
Retailer 7$11,774 NZD
Retailer 13$11,794 NZD
Retailer 9$12,483 NZD
Retailer 10$13,515 NZD
Retailer 8$13,549 NZD
Retailer 2$13,654 NZD
Retailer 5$14,716 NZD
Retailer 12$15,129 NZD
Retailer 6$15,210 NZD
Retailer 4$17,137 NZD
Retailer 11$19,028 NZD
NZ Jewellers$22,603 NZD

14 data points across 13 retailers

10 retailers$11,774 NZD to $22,603 NZD

Retailer 1
-
$10,760 NZD
Price last confirmed 19 days ago
B+
Retailer 2
-
$11,774 NZD
View
B+
Retailer 3
-
$12,483 NZD
View
B+
Retailer 4
-
$13,515 NZD
View
B+
Retailer 5
-
$13,549 NZD
View
B
Retailer 6
-
$13,654 NZD
View
B
Retailer 7
-
$15,129 NZD
View
B+
Retailer 8
-
$15,210 NZD
View
B
Retailer 9
-
$19,028 NZD
View
Most Expensive
B
NZ Jewellers
487b5f42-6e04-4b45-8b32-98f9a897b104 · Nov 2
$22,603 NZD
$12,530 USD
View
9 more retailers have this diamond
Prices start from $11,774 NZDSave up to $10,829 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+
1.55ct Round
$11,774 NZD