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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1569422103

Certificate GIA 1569422103

Diamond specifications and retailer prices

From $10,178 AUD
As of November 6, 2026
Save $13,132 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $23,310 AUD 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 1569422103. Listed at 18 retailers as of November 5, 2026, with prices from $10,178 to $23,310, a $13,132 spread on the same certified stone. NZ Jewellers lists it at $23,310. 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 angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1569422103
Dimensions7.38 × 7.34 × 4.60 mm
L/W Ratio1.01
Star length55%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.38 mm7.34 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1569422103
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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: $23,310 AUD|Low: $10,178 AUD|High: $23,310 AUD|Avg: $13,863 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
November 6, 2026
Retailer 7$10,178 AUD
Retailer 3$10,913 AUD
Retailer 8$11,221 AUD
Retailer 15$11,607 AUD
Retailer 5$11,655 AUD
Retailer 16$12,627 AUD
Retailer 10$12,794 AUD
Retailer 17$12,821 AUD
Retailer 6$12,930 AUD
Retailer 2$13,505 AUD
Retailer 9$13,937 AUD
Retailer 14$14,120 AUD
Retailer 12$14,404 AUD
Retailer 4$14,569 AUD
Retailer 11$17,003 AUD
Retailer 13$19,370 AUD
NZ Jewellers$23,310 AUD

10 data points across 17 retailers

18 retailers$10,178 AUD to $23,310 AUD

B+
Cheapest Retailer
-
$10,178 AUD
B+
Retailer 2
-
$10,882 AUD
View
B+
Retailer 3
-
$10,913 AUD
View
B
Retailer 4
-
$11,221 AUD
View
B+
Retailer 5
-
$11,607 AUD
View
B+
Retailer 6
-
$11,655 AUD
View
Final sale: no returns
B
Retailer 7
-
$12,627 AUD
View
B+
Retailer 8
-
$12,794 AUD
View
B
Retailer 9
-
$12,821 AUD
View
B
Retailer 10
-
$12,930 AUD
View
B
Retailer 11
-
$13,505 AUD
View
B
Retailer 12
-
$13,937 AUD
View
B
Retailer 13
-
$14,120 AUD
View
B
Retailer 14
-
$14,404 AUD
View
B
Retailer 15
-
$14,569 AUD
View
B
Retailer 16
-
$17,003 AUD
View
B
Retailer 17
-
$19,370 AUD
View
Most Expensive
B
NZ Jewellers
b458258d-afb8-446c-bdea-6cbbd2a387e5 · Nov 5
$23,310 AUD
$16,016 USD
View
17 more retailers have this diamond
Prices start from $10,178 AUDSave up to $13,132 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.

B+
1.55ct Round
$10,178 AUD