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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 3565648167

Certificate GIA 3565648167

Diamond specifications and retailer prices

From $9,684 AUD
As of November 6, 2026
Save $11,888 AUD (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $21,572 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 3565648167. Listed at 23 retailers as of November 5, 2026, with prices from $9,684 to $21,572, a $11,888 spread on the same certified stone. NZ Jewellers lists it at $21,572. 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 angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 3565648167
Dimensions7.46 × 7.43 × 4.58 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
7.46 mm7.43 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3565648167
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.5%

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: $21,572 AUD|Low: $9,684 AUD|High: $22,266 AUD|Avg: $13,063 AUD|-3.1%
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 6, 2026
Retailer 2$9,684 AUD
Retailer 20$9,978 AUD
Retailer 10$10,048 AUD
Retailer 4$10,319 AUD
Retailer 11$11,147 AUD
Retailer 8$11,402 AUD
Retailer 17$11,752 AUD
Retailer 7$11,847 AUD
Retailer 15$12,033 AUD
Retailer 3$12,254 AUD
Retailer 9$12,327 AUD
Retailer 16$12,543 AUD
Retailer 6$12,898 AUD
Retailer 12$12,915 AUD
Retailer 22$13,096 AUD
Retailer 23$13,179 AUD
Retailer 5$13,259 AUD
Retailer 19$13,301 AUD
Retailer 13$14,215 AUD
Retailer 14$14,881 AUD
Retailer 18$15,734 AUD
Retailer 21$17,926 AUD
NZ Jewellers$21,572 AUD

16 data points across 23 retailers

23 retailers$9,684 AUD to $21,572 AUD

B+
Cheapest Retailer
-
$9,684 AUD
B+
Retailer 2
-
$9,978 AUD
View
B+
Retailer 3
-
$10,048 AUD
View
B+
Retailer 4
-
$10,319 AUD
View
Final sale: no returns
B+
Retailer 5
-
$11,147 AUD
View
B+
Retailer 6
-
$11,402 AUD
View
B+
Retailer 7
-
$11,752 AUD
View
B+
Retailer 8
-
$11,847 AUD
View
Retailer 9
-
$12,033 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$12,254 AUD
View
B+
Retailer 11
-
$12,327 AUD
View
Retailer 12
-
$12,543 AUD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$12,898 AUD
View
B+
Retailer 14
-
$12,915 AUD
View
B+
Retailer 15
-
$13,096 AUD
View
B+
Retailer 16
-
$13,179 AUD
View
B
Retailer 17
-
$13,259 AUD
View
B+
Retailer 18
-
$13,301 AUD
View
B
Retailer 19
-
$14,215 AUD
View
B
Retailer 20
-
$14,881 AUD
View
B
Retailer 21
-
$15,734 AUD
View
B
Retailer 22
-
$17,926 AUD
View
Most Expensive
B
NZ Jewellers
8b723761-7652-4c38-a8f2-4e039014f914 · Nov 5
$21,572 AUD
$14,822 USD
View
22 more retailers have this diamond
Prices start from $9,684 AUDSave up to $11,888 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
$9,684 AUD