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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6321773138

Certificate GIA 6321773138

Diamond specifications and retailer prices

From $17,103 NZD
As of November 4, 2026
Save $11,606 NZD (40%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $30,722 NZD at NZ Jewellers · As of September 19, 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 6321773138. Listed at 19 retailers as of November 4, 2026, with a 68% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
OriginNatural
Grading LabGIA
CertificateGIA 6321773138
Dimensions7.36 × 7.40 × 4.62 mm
L/W Ratio1.01
Top View
7.36 mm7.40 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6321773138
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $24,293 NZD|Low: $17,103 NZD|High: $29,133 NZD|Avg: $22,329 NZD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$17,103 NZD
Retailer 9$18,432 NZD
Retailer 3$19,574 NZD
Retailer 7$20,303 NZD
Retailer 6$21,134 NZD
Retailer 4$23,075 NZD
Retailer 1$24,293 NZD
Retailer 2$26,893 NZD
Retailer 5$28,709 NZD

34 data points across 9 retailers

19 retailers$17,103 NZD to $28,709 NZD

B
Cheapest Retailer
-
$17,103 NZD
B
Retailer 2
-
$19,574 NZD
View
B
Retailer 3
-
$19,661 NZD
View
Retailer 4
-
$19,969 NZD
View
Price last confirmed 51 days ago
Retailer 5
-
$20,303 NZD
View
Price last confirmed 15 days ago
B
Retailer 6
-
$21,134 NZD
View
Retailer 7
-
$21,134 NZD
View
Price last confirmed 8 days ago
Retailer 8
-
$21,134 NZD
View
Price last confirmed 40 days ago
Retailer 9
-
$21,134 NZD
View
Price last confirmed 24 days ago
B
Retailer 10
-
$21,196 NZD
View
B
Retailer 11
-
$21,196 NZD
View
B
Retailer 12
-
$21,899 NZD
View
Retailer 13
-
$23,041 NZD
View
Price last confirmed 49 days ago
B
Retailer 14
-
$23,075 NZD
View
Retailer 15
-
$24,252 NZD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$24,293 NZD
View
B
Retailer 17
-
$26,893 NZD
View
B
Retailer 18
-
$28,709 NZD
View
Most Expensive
NZ Jewellers
610ff20b-4319-418f-b8be-e6336119932d · Sep 19
$30,722 NZD
$17,031 USD
View
Price last confirmed 48 days ago
18 more retailers have this diamond
Prices start from $17,103 NZDSave up to $11,606 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
$17,103 NZD