CaratHunter
Plans
Cushion|Natural|GIA

1.70ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 6555251052

Certificate GIA 6555251052

Diamond specifications and retailer prices

From $9,223 AUD
HK$50,500 HKD
As of November 1, 2026
Save $9,016 AUD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $18,239 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion 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 stated by the retailer rather than the lab and certified by GIA 6555251052. Listed at 18 retailers as of October 28, 2026, with prices from $9,223 to $18,239, a $9,016 spread on the same certified stone. Queensmith lists it at $18,239. 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555251052
Dimensions8.03 × 6.14 × 4.18 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
8.03 mm6.14 mm1.70 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555251052
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.0%

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 1
Current: $18,239 AUD|Low: $9,223 AUD|High: $18,412 AUD|Avg: $12,728 AUD|+1.2%
Queensmith
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
November 2, 2026
Retailer 15$9,223 AUD
Retailer 2$9,731 AUD
Retailer 5$10,033 AUD
Retailer 7$11,081 AUD
Retailer 12$11,087 AUD
Retailer 3$11,258 AUD
Retailer 14$11,308 AUD
Retailer 9$11,414 AUD
Retailer 4$11,508 AUD
Retailer 6$11,805 AUD
Retailer 10$12,515 AUD
Retailer 8$13,384 AUD
Retailer 13$15,051 AUD
Retailer 11$17,074 AUD
Queensmith$18,239 AUD

26 data points across 15 retailers

18 retailers$9,223 AUD to $18,239 AUD

B+
Cheapest Retailer
-
$9,223 AUD
HK$50,500 HKD
B+
Retailer 2
-
$9,731 AUD
₹649,516 INR
View
B+
Retailer 3
-
$10,033 AUD
$7,031 USD
View
Retailer 4
-
$10,383 AUD
SGD 9,833 SGD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
$11,081 AUD
SGD 10,494 SGD
View
B+
Retailer 6
-
$11,087 AUD
$7,770 USD
View
B+
Retailer 7
-
$11,258 AUD
$7,890 USD
View
B
Retailer 8
-
$11,308 AUD
$7,925 USD
View
Final sale: no returns
B+
Retailer 9
-
$11,414 AUD
£6,298 GBP
View
B
Retailer 10
-
$11,418 AUD
$8,002 USD
View
B
Retailer 11
-
$11,508 AUD
$8,065 USD
View
Retailer 12
-
$11,805 AUD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$12,464 AUD
View
B
Retailer 14
-
$12,515 AUD
$8,771 USD
View
B
Retailer 15
-
$13,384 AUD
€8,933 EUR
View
B
Retailer 16
-
$15,051 AUD
ZAR 170,401 ZAR
View
B
Retailer 17
-
$17,074 AUD
£9,422 GBP
View
Most Expensive
B
Queensmith
6555251052 · Oct 28
$18,239 AUD
£10,065 GBP
View
17 more retailers have this diamond
Prices start from $9,223 AUDSave up to $9,016 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+
1.70ct Cushion
$9,223 AUD