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Cushion|Natural|GIA

1.70ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1545692555

Certificate GIA 1545692555

Diamond specifications and retailer prices

From $4,899 AUD
As of November 6, 2026
Save $5,396 AUD (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,295 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion 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 stated by the retailer rather than the lab and certified by GIA 1545692555. Listed at 14 retailers as of November 4, 2026, with prices from $4,899 to $10,295, a $5,396 spread on the same certified stone. MOH London lists it at $10,295. 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

1.70
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1545692555
Dimensions8.17 × 6.09 × 4.13 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural
Top View
8.17 mm6.09 mm1.70 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1545692555
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.8%

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: $10,295 AUD|Low: $4,899 AUD|High: $11,321 AUD|Avg: $7,096 AUD|-9.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3$4,899 AUD
Retailer 2$5,187 AUD
Retailer 11$5,798 AUD
Retailer 10$6,185 AUD
Retailer 6$6,236 AUD
Retailer 9$6,271 AUD
Retailer 7$6,526 AUD
Retailer 12$6,666 AUD
Retailer 4$7,006 AUD
Retailer 5$7,293 AUD
Retailer 8$7,909 AUD
MOH London$10,295 AUD

29 data points across 12 retailers

14 retailers$4,899 AUD to $10,295 AUD

A
Cheapest Retailer
-
$4,899 AUD
A
Retailer 2
-
$5,187 AUD
View
B+
Retailer 3
-
$5,798 AUD
View
B+
Retailer 4
-
$6,185 AUD
View
B+
Retailer 5
-
$6,236 AUD
View
B+
Retailer 6
-
$6,271 AUD
View
B+
Retailer 7
-
$6,484 AUD
View
B+
Retailer 8
-
$6,526 AUD
View
B+
Retailer 9
-
$6,666 AUD
View
B+
Retailer 10
-
$6,884 AUD
View
Retailer 11
-
$7,006 AUD
View
Price last confirmed 22 days ago
B
Retailer 12
-
$7,293 AUD
View
B+
Retailer 13
-
$7,909 AUD
View
Most Expensive
B
MOH London
43B26F09F · Nov 4
$10,295 AUD
£5,570 GBP
View
13 more retailers have this diamond
Prices start from $4,899 AUDSave up to $5,396 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.

A
1.70ct Cushion
$4,899 AUD