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Round|Natural|GIA

1.61ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6505424681

Certificate GIA 6505424681

Diamond specifications and retailer prices

From $12,445 AUD
$8,743 USD
As of October 29, 2026
Save $3,937 AUD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $16,382 AUD at 77 Diamonds · As of October 29, 2026
View at 77 Diamonds

About this 1.61ct natural round diamond

This 1.61ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505424681. Listed at 4 retailers as of October 29, 2026, with prices from $12,445 to $16,382, a $3,937 spread on the same certified stone. 77 Diamonds lists it at $16,382. 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

1.61
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6505424681
Dimensions7.46 × 7.40 × 4.65 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.46 mm7.40 mm1.61 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505424681
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $16,382 AUD|Low: $12,325 AUD|High: $16,540 AUD|Avg: $14,426 AUD|+1.4%
77 Diamonds
Retailer 2
October 29, 2026
Retailer 2$12,487 AUD
77 Diamonds$16,382 AUD

35 data points across 2 retailers

4 retailers$12,445 AUD to $16,382 AUD

A
Cheapest Retailer
-
$12,445 AUD
$8,743 USD
B+
Retailer 2
-
$12,487 AUD
$8,773 USD
View
B+
Retailer 3
-
$13,441 AUD
$9,443 USD
View
Most Expensive
B+
77 Diamonds
RBZTMYDJJ8D · Oct 29
$16,382 AUD
£9,062 GBP
View
3 more retailers have this diamond
Prices start from $12,445 AUDSave up to $3,937 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
1.61ct Round
$12,445 AUD