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Marquise|Natural|GIA

1.23ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2547809751

Certificate GIA 2547809751

Diamond specifications and retailer prices

From $11,511 NZD
$6,381 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $11,511 NZD at The Diamond Guys
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at The Diamond Guys

About this 1.23ct natural marquise diamond

This 1.23ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547809751. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.23
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.86°
Pavilion angle40.99°
OriginNatural
Grading LabGIA
CertificateGIA 2547809751
Dimensions10.56 × 5.47 × 3.51 mm
L/W Ratio1.93
Top View
10.56 mm5.47 mm1.23 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547809751
Side View
Table 59.0%Crown 38.86°Girdle: STK-THKPavilion 40.99°Culet: NoneDepth 64.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $10,300 NZD|Low: $6,896 NZD|High: $19,316 NZD|Avg: $12,095 NZD|-17.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 19, 2026
Retailer 10$6,896 NZD
Retailer 11$9,151 NZD
Retailer 8$9,324 NZD
Retailer 6$9,406 NZD
Retailer 5$9,570 NZD
Retailer 3$10,107 NZD
Retailer 1$10,300 NZD
Retailer 9$11,282 NZD
The Diamond Guys$11,511 NZD
Retailer 12$11,601 NZD
Retailer 2$13,715 NZD
Retailer 7$15,456 NZD
Retailer 4$17,850 NZD

53 data points across 13 retailers

1 retailer

B
The Diamond Guys
1929301309 · Nov 6
$11,511 NZD
$6,381 USD
View

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
1.23ct Marquise
$11,511 NZD