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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6531188321

Certificate GIA 6531188321

Diamond specifications and retailer prices

From $13,073 NZD
As of November 6, 2026
Save $16,419 NZD (56%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $29,492 NZD at NZ Jewellers · As of November 5, 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 6531188321. Listed at 28 retailers as of November 5, 2026, with prices from $13,073 to $29,492, a $16,419 spread on the same certified stone. NZ Jewellers lists it at $29,492. 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6531188321
Dimensions7.36 × 7.34 × 4.56 mm
L/W Ratio1.00
Top View
7.36 mm7.34 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531188321
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.1%

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: $16,194 NZD|Low: $13,073 NZD|High: $24,870 NZD|Avg: $17,830 NZD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$13,073 NZD
Retailer 6$13,484 NZD
Retailer 4$13,805 NZD
Retailer 8$14,148 NZD
Retailer 1$16,194 NZD
Retailer 7$16,291 NZD
Retailer 3$18,169 NZD
Retailer 2$21,512 NZD
Retailer 5$24,508 NZD

44 data points across 9 retailers

28 retailers$13,073 NZD to $29,492 NZD

B+
Cheapest Retailer
-
$13,073 NZD
B+
Retailer 2
-
$13,371 NZD
View
B+
Retailer 3
-
$13,484 NZD
View
B+
Retailer 4
-
$13,775 NZD
View
B+
Retailer 5
-
$13,805 NZD
View
B+
Retailer 6
-
$14,148 NZD
View
Final sale: no returns
B+
Retailer 7
-
$14,202 NZD
View
B+
Retailer 8
-
$14,491 NZD
View
B+
Retailer 9
-
$14,675 NZD
View
Retailer 10
-
$14,745 NZD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$15,716 NZD
View
B
Retailer 12
-
$15,975 NZD
View
B+
Retailer 13
-
$16,194 NZD
View
B
Retailer 14
-
$16,221 NZD
View
Retailer 15
-
$16,291 NZD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$16,365 NZD
View
B
Retailer 17
-
$16,949 NZD
View
B
Retailer 18
-
$17,480 NZD
View
B
Retailer 19
-
$17,480 NZD
View
B
Retailer 20
-
$17,873 NZD
View
B
Retailer 21
-
$18,057 NZD
View
B
Retailer 22
-
$18,169 NZD
View
B
Retailer 23
-
$18,432 NZD
View
B
Retailer 24
-
$18,822 NZD
View
Retailer 25
-
$19,412 NZD
View
Price last confirmed 14 days ago
B
Retailer 26
-
$21,512 NZD
View
B
Retailer 27
-
$24,508 NZD
View
Most Expensive
B
NZ Jewellers
bad8d0d6-c1c9-4c6b-977e-f24c51c588e1 · Nov 5
$29,492 NZD
$16,349 USD
View
27 more retailers have this diamond
Prices start from $13,073 NZDSave up to $16,419 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
$13,073 NZD