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1.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG654412892

Shape and cutting style on the report: Round brilliant

Certificate IGI LG654412892

Diamond specifications and retailer prices

From $271 NZD
$153 USD
As of November 1, 2026
Save $1,579 NZD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,850 NZD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown 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 IGI LG654412892 or 654412892. Listed at 18 retailers as of November 1, 2026, with prices from $271 to $1,850, a $1,579 spread on the same certified stone. Reve Diamonds lists it at $1,850. 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

1.09
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654412892
Dimensions6.62 × 6.64 × 4.03 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.62 mm6.64 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654412892
Side View
Table 59.0%Crown 33.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.8%

Caratlytics Score

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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: Nov 1
Current: $584 NZD|Low: $213 NZD|High: $1,850 NZD|Avg: $846 NZD|+7.5%
Retailer 1
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
Reve Diamonds
November 1, 2026
Retailer 4$271 NZD
Retailer 11$303 NZD
Retailer 12$335 NZD
Retailer 14$335 NZD
Retailer 9$559 NZD
Retailer 1$584 NZD
Retailer 13$614 NZD
Retailer 7$654 NZD
Retailer 10$774 NZD
Retailer 2$914 NZD
Retailer 5$1,081 NZD
Retailer 3$1,178 NZD
Retailer 6$1,508 NZD
Retailer 8$1,573 NZD
Reve Diamonds$1,850 NZD

44 data points across 15 retailers

18 retailers$271 NZD to $1,850 NZD

Retailer 1
-
$268 NZD
$151 USD
Price last confirmed 40 days ago
A
Retailer 2
-
$271 NZD
$153 USD
View
A
Retailer 3
-
$303 NZD
$171 USD
View
Final sale: no returns
Retailer 4
-
$328 NZD
$185 USD
View
Price last confirmed 40 days ago
Retailer 5
-
$335 NZD
$189 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$335 NZD
$189 USD
View
A
Retailer 7
-
$559 NZD
$315 USD
View
A
Retailer 8
-
$584 NZD
£259 GBP
View
B+
Retailer 9
-
$614 NZD
$346 USD
View
B+
Retailer 10
-
$654 NZD
€351 EUR
View
B+
Retailer 11
-
$774 NZD
$436 USD
View
B+
Retailer 12
-
$914 NZD
$515 USD
View
Retailer 13
-
$1,072 NZD
$604 USD
View
Price last confirmed 41 days ago
B
Retailer 14
-
$1,081 NZD
$609 USD
View
B
Retailer 15
-
$1,178 NZD
$664 USD
View
Retailer 16
-
$1,508 NZD
$850 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$1,573 NZD
£698 GBP
View
Most Expensive
B
Reve Diamonds
499F4957B · Nov 1
$1,850 NZD
$1,043 USD
View
17 more retailers have this diamond
Prices start from $271 NZDSave up to $1,579 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.

A
1.09ct Round
$271 NZD