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1.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG687537691

Shape and cutting style on the report: Round brilliant

Certificate IGI LG687537691

Diamond specifications and retailer prices

From $271 NZD
$153 USD
As of October 29, 2026
Save $1,579 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,850 NZD at Reve Diamonds · As of October 30, 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 LG687537691 or 687537691. Listed at 19 retailers as of October 29, 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 angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687537691
Dimensions6.62 × 6.60 × 4.06 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 mm6.60 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687537691
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.5%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $654 NZD|Low: $213 NZD|High: $1,850 NZD|Avg: $843 NZD|+9.7%
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
Retailer 15
Reve Diamonds
October 31, 2026
Retailer 5$271 NZD
Retailer 3$303 NZD
Retailer 13$335 NZD
Retailer 15$335 NZD
Retailer 11$559 NZD
Retailer 8$584 NZD
Retailer 14$614 NZD
Retailer 1$654 NZD
Retailer 7$754 NZD
Retailer 12$774 NZD
Retailer 2$914 NZD
Retailer 6$1,081 NZD
Retailer 4$1,178 NZD
Retailer 10$1,508 NZD
Retailer 9$1,573 NZD
Reve Diamonds$1,850 NZD

44 data points across 16 retailers

19 retailers$271 NZD to $1,850 NZD

Retailer 1
-
$268 NZD
$151 USD
Price last confirmed 39 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 39 days ago
A
Retailer 5
-
$335 NZD
$189 USD
View
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
Retailer 11
-
$754 NZD
$425 USD
View
Price last confirmed 24 days ago
B+
Retailer 12
-
$774 NZD
$436 USD
View
B+
Retailer 13
-
$914 NZD
$515 USD
View
Retailer 14
-
$1,072 NZD
$604 USD
View
Price last confirmed 40 days ago
B
Retailer 15
-
$1,081 NZD
$609 USD
View
B
Retailer 16
-
$1,178 NZD
$664 USD
View
B
Retailer 17
-
$1,508 NZD
$850 USD
View
B
Retailer 18
-
$1,573 NZD
£698 GBP
View
Most Expensive
B
Reve Diamonds
8281940CB · Oct 30
$1,850 NZD
$1,043 USD
View
18 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