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1.16ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2506417383

Certificate GIA 2506417383

Diamond specifications and retailer prices

From $12,132 NZD
SGD 9,240 SGD
As of October 31, 2026
Save $4,067 NZD (25%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $16,199 NZD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.16ct natural round diamond

This 1.16ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2506417383. Listed at 2 retailers as of October 29, 2026, with prices from $12,132 to $16,199, a $4,067 spread on the same certified stone. Diamond Quarter lists it at $16,199. 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

1.16
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2506417383
Dimensions6.78 × 6.73 × 4.11 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.78 mm6.73 mm1.16 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2506417383
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $12,132 NZD|Low: $5,321 NZD|High: $12,209 NZD|Avg: $8,548 NZD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 13, 2026
Retailer 2$5,321 NZD
Retailer 7$7,305 NZD
Retailer 10$7,402 NZD
Retailer 4$7,881 NZD
Retailer 3$8,062 NZD
Retailer 5$8,552 NZD
Retailer 9$8,552 NZD
Retailer 6$9,546 NZD
Retailer 8$10,681 NZD
Retailer 1$12,132 NZD

4 data points across 10 retailers

2 retailers$12,132 NZD to $16,199 NZD

B
Cheapest Retailer
-
$12,132 NZD
SGD 9,240 SGD
Most Expensive
B
Diamond Quarter
1.16SI1D25836126KG · Oct 29
$16,199 NZD
£7,189 GBP
View
1 more retailer has this diamond
Prices start from $12,132 NZDSave up to $4,067 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.

B
1.16ct Round
$12,132 NZD