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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6561157320

Certificate GIA 6561157320

Diamond specifications and retailer prices

From $5,570 NZD
As of November 6, 2026
Save $1,973 NZD (26%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,543 NZD at Blue Nile · As of November 3, 2026
View at Blue Nile

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6561157320. Listed at 6 retailers as of November 3, 2026, with prices from $5,570 to $7,543, a $1,973 spread on the same certified stone. Blue Nile lists it at $7,543. 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6561157320
Dimensions7.30 × 7.34 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
7.30 mm7.34 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561157320
Side View
Table 56.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,543 NZD|Low: $5,486 NZD|High: $7,639 NZD|Avg: $6,593 NZD|-1.3%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$5,570 NZD
Retailer 3$6,084 NZD
Retailer 6$6,482 NZD
Retailer 5$6,977 NZD
Retailer 7$7,377 NZD
Retailer 4$7,457 NZD
Blue Nile$7,543 NZD

45 data points across 7 retailers

6 retailers$5,570 NZD to $7,543 NZD

A
Cheapest Retailer
-
$5,570 NZD
A
Retailer 2
-
$6,084 NZD
View
B+
Retailer 3
-
$6,977 NZD
View
B+
Retailer 4
-
$7,377 NZD
View
B+
Retailer 5
-
$7,457 NZD
View
Most Expensive
B+
Blue Nile
30420830 · Nov 3
$7,543 NZD
$4,240 USD
View
5 more retailers have this diamond
Prices start from $5,570 NZDSave up to $1,973 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.

A
1.53ct Round
$5,570 NZD